Illustration by Paul Sereno and Carol Abraczinskas

Here's one way you can get to the answer:

1. You know that the scale represents 10 cm.
How long is the plate on each side? (Round to the nearest centimeter).

2. You know that 1 inch = 2.54 centimeters.
How long is the plate in inches?

3. You know the length of each side of the scute.
How much area did this tail scute cover?

4. You know that every square inch of fossil scute = 1 ounce.
How much did the scute weigh in pounds?

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